Airfoil with geometrically segmented coating section

Abstract

An airfoil includes an airfoil body that has a geometrically segmented coating section. The geometrically segmented coating section includes a wall having an outer side. The outer side has an array of cells, and there is a coating disposed in the array of cells.

What is claimed is: 
     
       1. An airfoil comprising:
 an airfoil body having a geometrically segmented coating section, the geometrically segmented coating section including
 a wall having an outer side, the outer side including an array of cells that are closed-sided, and 
 a coating disposed in the array of cells, wherein the geometrically segmented coating section is on a portion of the airfoil section, and an adjacent portion of the airfoil section includes the coating but excludes the cells. 
 
 
     
     
       2. The airfoil as recited in  claim 1 , wherein the cells are polygonal. 
     
     
       3. The airfoil as recited in  claim 1 , wherein the coating substantially fills the cells. 
     
     
       4. The airfoil as recited in  claim 1 , wherein the coating fully embeds the cells. 
     
     
       5. The airfoil as recited in  claim 1 , wherein the airfoil body is an airfoil section. 
     
     
       6. The airfoil as recited in  claim 5 , wherein the geometrically segmented coating section is on a suction side of the airfoil section. 
     
     
       7. The airfoil as recited in  claim 5 , wherein the geometrically segmented coating section is on a pressure side of the airfoil section. 
     
     
       8. The airfoil as recited in  claim 1 , wherein the airfoil body is a platform. 
     
     
       9. The airfoil as recited in  claim 1 , wherein the coating is substantially formed of ceramic. 
     
     
       10. The airfoil as recited in  claim 9 , wherein the coating has a laminar microstructure. 
     
     
       11. The airfoil as recited in  claim 10 , wherein the ceramic includes yttria and the wall is formed of an alloy. 
     
     
       12. The airfoil as recited in  claim 1 , wherein adjacent cells of the array of cells share a common uniform thickness wall. 
     
     
       13. The airfoil as recited in  claim 1 , wherein the coating is flat such that it excludes contours from the cells. 
     
     
       14. A gas turbine engine comprising:
 a compressor section; 
 a combustor in fluid communication with the compressor section; and 
 a turbine section in fluid communication with the combustor, 
 at least one of the turbine section or the compressor section including an airfoil having an airfoil body, the airfoil body including a geometrically segmented coating section, the geometrically segmented coating section including
 a wall having an outer side, the outer side including an array of cells that are closed-sided, and 
 a coating disposed in the array of cells, wherein the geometrically segmented coating section is on a portion of the airfoil section, and an adjacent portion of the airfoil section includes the coating but excludes the cells. 
 
 
     
     
       15. The gas turbine engine as recited in  claim 14 , wherein the cells are polygonal and the coating substantially fills the cells. 
     
     
       16. The gas turbine engine as recited in  claim 14 , wherein the airfoil body is an airfoil section. 
     
     
       17. The gas turbine engine as recited in  claim 16 , wherein the geometrically segmented coating section is on a suction side of the airfoil section. 
     
     
       18. The gas turbine engine as recited in  claim 14 , wherein the coating is substantially formed of ceramic and has a laminar microstructure. 
     
     
       19. The gas turbine engine component as recited in  claim 18 , wherein the ceramic includes yttria and the wall is formed of an alloy. 
     
     
       20. The gas turbine engine component as recited in  claim 19 , wherein the geometrically segmented coating section is on a suction side of the airfoil section.